Right.
On the use of urine as a bodily substance, you've suggested that, because of the metabolites, it's historical evidence rather than current presence of THC in the system. I'm struck by the fact that at the work site people still use urine tests, if I'm not mistaken, in railways as well as in Fort McMurray and everywhere heavy equipment is used. They're the gold standard in employee testing to this point. Has there been a change? Are people using, for example DrugWipe, in the workplace?